What Second Opinion is
Second Opinion is a fact-checking nudge for the browser: highlight a passage, invoke Grok, and receive accuracy assessments, bias flags and alternative viewpoints.
What you can do with it
- Check suspicious claims quickly
- Compare viewpoints on contested topics
- Screen social media posts
- Interrogate news framing
- Build a verification habit
Who it is for
- News readers sceptical by default
- Researchers checking sources
- Social media heavy users
What to watch out for
- AI fact-checking is itself fallible; Grok has its own biases and errors, so this is a second opinion, not a verdict
- You supply your own Grok API key and pay those costs
- Highlighted content goes to the model provider; mind sensitive pages
- Overreliance on AI checks can itself become a bias
Pros & cons
✓ What we like
- Frictionless verification habit
- Viewpoint comparison is useful
- Free extension itself
! What to watch out for
- AI checks are fallible
- API costs on you
- Content leaves the page
FAQ
Can I trust its verdicts?
No. Treat them as prompts to dig further, never as final judgments.
What does it cost?
The extension is free but you supply and pay for a Grok API key.
Does it work on all sites?
Most public pages; check behaviour on dynamic content.
Last reviewed: 2026-09-19
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